Trust the CodeLinaro fork (#236)

This will make it easier for me to get CI running on my pull requests.

master/master.cfg

@@ -1718,8 +1718,12 @@ class SafeGitHubEventHandler(GitHubEventHandler):
                     payload['action'] = 'synchronize'
                 return super().handle_pull_request(payload, event)
 
-            # Skip external pull requests that originate from a fork, ie. not from a trusted collaborator.
-            if pr['head']['repo']['full_name'] != 'halide/Halide':
+            # Skip external pull requests that originate from untrusted forks
+            trusted_repos = (
+                'halide/Halide',  # the primary repository is obviously trusted
+                'CodeLinaro/Halide',  # the Qualcomm open-source staging fork is trustworthy
+            )
+            if pr['head']['repo']['full_name'] not in trusted_repos:
                 # print("PR %s was skipped due to being external:" % str(pr['head']['repo']['full_name']))
                 return self.skip()